Gibbage

Gibbage is a 2D cartoon Deathmatch game set over 27 varied arenas, including zombie-infested hospitals, atop speeding trains and inside alien beasts. Each player is spawned from their Power Booth, with a perpetually-draining Power Level of 200. Your ultimate goal is to reduce your opponent's Power Level to zero, thereby winning control of the arena.
To do this, you run around collecting the randomly spawned Power Cubes (up to three at a time), and returning them to your Power Booth. Doing so increases your Power Level, and reduces your opponent's. Naturally, as the Power Cubes are in short supply you'll have to stop the other team getting there first. This is where the 'gib' part of Gibbage comes in -- you'll need your wits about you as you leap and swing about the arena trying to kill your opponent with well-timed bombs or your itchy trigger-finger.

This independent title was produced by Dan Marshall as part of a one-man experiment in designing games with no training or design.